import router from './router'
import store from './store'
import {
  Message
} from 'element-ui'
import NProgress from 'nprogress' // progress bar
import 'nprogress/nprogress.css' // progress bar style
import {
  getToken
} from '@/utils/auth' // get token from cookie
import getPageTitle from '@/utils/get-page-title'

NProgress.configure({
  showSpinner: false
}) // NProgress Configuration

const whiteList = ['/login', '/forgetPassword', '/resetPassword'] // no redirect whitelist

router.beforeEach(async(to, from, next) => {
  // start progress bar
  NProgress.start()

  // set page title
  document.title = getPageTitle(to.meta.title)

  // determine whether the user has logged in
  const hasToken = getToken()
  if (hasToken) {
    if (to.path === '/login') {
      // if is logged in, redirect to the home page
      next({
        path: '/index'
      })
      NProgress.done()
    } else {
      const hasGetUserInfo = store.getters.name
      if (hasGetUserInfo) {
        if (to.matched.length === 0) {
          next('/404') // 判断此跳转路由的来源路由是否存在，存在的情况跳转到来源路由，否则跳转到404页面
        }
        next() // 如果存在用户直接跳转
      } else {
        try {
          // get user info
          await store.dispatch('user/getInfo')
          // 获取路由数据
          const accessedRoutes = await store
            .dispatch(
              'permission/generateRoutes',
              hasToken
            )
          router.addRoutes(accessedRoutes) // 将路由数据加入router
          next(to.path) // 跳转目标路径
        } catch (error) {
          // remove token and go to login page to re-login
          await store.dispatch('user/resetToken')
          Message.error(error || 'Has Error')
          next(`/login?redirect=${to.path}`)
          NProgress.done()
          // debugger
        }
      }
    }
  } else {
    /* has no token*/
    console.log(to.path)
    if (whiteList.indexOf(to.path) !== -1 || to.path.includes('/resetPassword')) {
      // in the free login whitelist, go directly
      next()
    } else {
      // other pages that do not have permission to access are redirected to the login page.
      next(`/login?redirect=${to.path}`)
      NProgress.done()
    }
  }
})

router.afterEach(() => {
  // finish progress bar
  NProgress.done()
})
